Please note: In many cases, the station position in our database is accurate
to only one minute. Thus, the tide gauge may not appear to be on the coast.
Tromso 040/031 RLR(1964) is 12.8m below BM "Trafokiosk"
Documentation added 1995-03-30
Prior to 1978 fcode=C
Documentation added 1995-03-30
Tide gauge network modernised, new equipment installed in 1986
Documentation added 2010-07-19
The Norwegian Mapping Authority has revised their datasets. The Primary benchmark for Tromso is now O6 N21 11.249m above TGZ. RLR for the dataset was re-calculated using 2008 as the RLR year. The revised RLR factor is now 5.551m while RLR (2008) is 16.8m below TGBM O6 N21.
Documentation added 2012-09-05
For information on sea level change along the Norwegian coast see paper "Contributions to sea level variability along the Norwegian coast for 1960-2010" by K. Richter, J.E.O. Nilsen and H. Drange.
Data Authority
Norwegian Mapping Authority Hydrographic Service Po. Box 60 4001 Stavanger